Tjahjono, Arif, Firly Giska Pramesti, Nadya Salsabila Frendyta, and Permana Andi Paristiawan. 2024. “Increased Hardness Value of Medium Manganese Steel Through Double Tempering, Hot Rolling, and Variation of Cooling Media”. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS 16 (1):79-87. https://doi.org/10.25077/jif.16.1.79-87.2024.